Motorized iris based on Chris Schaie’s design

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Thingiverse user overflo reverse-engineered Chris Schaie’s renowned mechanical iris peephole design and added a rack and pinion so that it can be operated with a motor. His is executed in laser-cut plastic, controlled by an Arduino, and opens onto an LCD display that shows a giant freaking eye staring out of it. Deets are here.

More:

• Secret knock-detecting workshop door
• An iris by any other name?
• Cardboard irising peephole model